17535 fault code

[ntcupra]

Has anyone actually found a fix for this code 17535- P1127 Long Term Fuel Trim mult.,Bank1 System too Rich?? I've changed the coolant temp sensor, pre cat lambda sensor, air flow meters about 2 weeks old, is it worth a try on changing the plugs?

Any help would be great as trying to get the car ready for the meet!!

Thank you

 

[Tucker157]

Erm... Normally Ross tech site, makers of vagcom has a wiki on such problems, but your code is not there... Odd.

However I pulled this from there to help you.

You can check your current state of trim by using VAG-COM or equivalent to look in Group 032 (in many modern ECU's, consult your Factory Repair Manual for the specific group for your particular vehicle) in your engine measuring blocks. The first two fields will have percentages. The first field tells the fuel trim at idle (Additive). The second field tells the fuel trim at elevated engine speeds (Multiplicative). Negative values indicate that the engine is running too rich and oxygen sensor control is therefore making it more lean by reducing the amount of time that the injectors are open. Positive values indicate that the engine is running too lean and oxygen sensor control is therefore making it richer by increasing the amount of time that the injectors are open.

If your code saying is saying too rich, then it's pulled a lot of fuel out to bring on the CEL.

I would look for boost leaks. As the metered air is fuelled if you lose the air it's gonna be rich!! Also use vagcom to check the MAF. Non genuine (and even genuine ones) have been known to be faulty out the box.


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[ntcupra]

Thanks for the reply tucker! The maf I had was only 2 weeks old but just put another on and the car seems to pull alot better, but will tell when I get it plugged in to vag com, wish I had vag com as you need it all the time lol